Year	Percent
1986-01-01	0.11031300000000001
1987-01-01	0.33632000000000000
1988-01-01	0.71696200000000000
1989-01-01	0.97901700000000000
1990-01-01	3.47215000000000000
1991-01-01	3.77029000000000000
1992-01-01	2.28672000000000000
1993-01-01	4.46036000000000000
1994-01-01	5.46743000000000000
1995-01-01	4.48767000000000000
1996-01-01	6.40705000000000000
1997-01-01	11.98920000000000000
1998-01-01	16.74000000000000000
1999-01-01	15.23370000000000000
2000-01-01	21.66420000000000000
2001-01-01	25.15530000000000000
2002-01-01	29.19470000000000000
2003-01-01	21.30880000000000000
2004-01-01	13.14940000000000000
2005-01-01	15.74530000000000000
2006-01-01	17.68590000000000000
2007-01-01	18.57750000000000000
2008-01-01	20.65770000000000000
2009-01-01	23.26750000000000000
2010-01-01	25.52270000000000000
2011-01-01	29.50900000000000000
2012-01-01	34.70320000000000000
2013-01-01	33.94460000000000000
2014-01-01	41.00360000000000000
2015-01-01	44.95399999999999000
2016-01-01	47.00680000000000000